Brown and Semelka clearly know what they are talking about and cover all the main MR physics concepts. MRI: The water stays muddy, 2004-01-28There must be many mid-career radiologists who suddenly find themselves waking up one morning next to a MRI scanner, knowing little if anything about how it works. How I wish someone could produce a book aimed at people like us. This is definately not the book for you if you fit the above category - I found it incomprehensible and of no help whatsoever.